
Leeks are one of those vegetables that transform completely under high heat — what starts out mild and a little grassy becomes sweet, silky, and deeply caramelized at the edges. This simple roasted preparation lets that natural flavor shine, finished with a bright squeeze of lemon and a drizzle of good olive oil that ties everything together beautifully. The whole dish comes together with just a handful of pantry staples, so there's nothing to second-guess about hidden sauces or seafood-derived additives that sometimes sneak into restaurant-style vegetable sides. Rinsing the leeks carefully between their layers is the one step worth taking your time on — grit has a way of hiding deep inside — but once they're on the baking sheet, the oven does all the real work. A scatter of fresh flat-leaf parsley at the end adds a pop of color and a herby lift that makes the whole platter look genuinely impressive. Serve these alongside roasted chicken, grilled steak, or even just a bowl of creamy soup, and they'll hold their own as the star of the table.
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Preheat the oven to 425°F (220°C). Line a large baking sheet with parchment paper.
Trim the root ends and dark-green tops from the leeks, leaving only the white and light-green parts. Halve each leek lengthwise, then rinse under cold running water, fanning the layers to remove any grit. Pat thoroughly dry with paper towels.
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